A shrimp fishing net for removing other marine organisms

Abstract

The present invention discloses a shrimp fishing net for removing other marine life, which is in the field of fishing nets. The net comprises a fishing net body, a support frame and a net bag provided at each end of the fishing net body, the support frame being fixedly connected to a first partition net, at least two first sliding blocks being slidably connected to the side walls of the fishing net, the first sliding blocks being respectively fixed to a second partition net and a third partition net, the first partition net, the second partition net, and the third partition net all having open ends, the second partition net being located between the first and second partition nets, and a switching assembly being slidably connected to the inner side wall of the second partition net. The present invention, by providing three layers of partition nets, can change the shape of one end of the fishing net's fishing port to different shapes. During and after the change of the fishing port of the fishing net, since the vertical net always remains vertical, the filter net always remains perpendicular to the vertical net, and the two continuously work in synergy, thereby remedying the problem of the prior art inconvenience in continuously catching shrimp when removing other marine life.

Description

Technical Field

[0001] The invention belongs to the field of fishing nets, in particular to a shrimp fishing net for removing other marine organisms. Background Art

[0002] Hair shrimp are 25-45 mm long, with a very laterally compressed body and a thin carapace. Their cephalothorax possesses a postorbital spine and a hepatic spine, but no buccal spines. Their eyes are spherical with slender eye stalks. Their bodies are transparent, with only the mouthparts and the second antennae being red. The ventral surface of the sixth abdominal segment is pale red. There is a red dot on the ventral surface of the base of the caudate limb, and a row of smaller red dots on the outer side of the base of the inner limb.

[0003] When catching hair shrimp, it is necessary to trawle within a certain range. During this process, due to the large variety of marine life, other marine life often enters the hair shrimp fishing net, causing squeezing of the hair shrimp and increasing the weight of the trawling process.

[0004] To remove other marine life during the shrimp fishing process, Chinese patent document CN108401994B describes a shrimp fishing net capable of removing other marine life. The net includes a trawl net having a frame fixedly connected to one end of the trawl net, the frame being fixedly connected to the trawl net port on all sides. A filter net is connected to the interior of the trawl net, and a net bag is connected to the tail of the trawl net. The bottom of the net bag is provided with at least one outlet. The mesh size of the trawl net is larger than the mesh size of the filter net to prevent captured shrimp from escaping from the sides of the trawl net. A ball is provided in the middle of the filter net, and multiple connecting rods are divergently provided on the outer side of the ball. A pull rope is connected to the roller. When the pull rope is pulled, the filter net takes on a conical structure, which can release trapped fish and jellyfish back into the sea through the escape port, preventing large marine life from entering the net bag along the trawl net and squeezing the shrimp.

[0005] The above technical solution still has the following problems: 1. During the process of trawling for hair shrimp, the fishing net is subjected to a large impact force from the seawater. In the process of adjusting the shape of the filter by pulling the rope to remove other marine organisms, the tapered structure formed by the filter may cause the hair shrimp to be discharged from the trawl through the escape port. 2. During the process of removing other marine organisms, newly caught hair shrimp entering the fishing net will not be easily passed through the filter due to the tapered structure of the filter, resulting in the inability to efficiently catch hair shrimp during this period. Summary of the Invention

[0006] The purpose of the present invention is to provide a hair shrimp fishing net for removing other marine organisms, which can effectively remove other marine organisms during the process of fishing hair shrimps, and can continuously and efficiently fish for hair shrimps during the process of removing other marine organisms.

[0007] To achieve the above-mentioned object, the technical solution of the present invention is as follows: a shrimp fishing net for removing other marine organisms, comprising a fishing net body, a support frame and a net bag respectively provided at both ends of the fishing net body, a first partition net fixedly connected to the support frame, at least two first sliding blocks slidably connected to the side walls of the fishing net, a second partition net and a third partition net respectively fixed to the first sliding blocks, the first partition net, the second partition net and the third partition net all having open structures at both ends, the second partition net being located between the first and second partition nets, and a switching assembly slidably connected to the inner side wall of the second partition net;

[0008] The switching assembly includes a support rod and a fixed block slidably connected to the inner side wall of the second partition net, the support rod is hinged to the fixed block at one end away from the second partition net, the second sliding block is slidably connected to the support rod, the first partition net is fixedly connected to the second sliding block at one end away from the support frame, the fixed block is fixedly connected to the vertical net, the second partition net and the third partition net are both fixedly connected to the side wall of the vertical net, the side wall of the vertical net and the side wall of the fishing net body are both provided with escape openings, the escape openings are all located between the second partition net and the third partition net, and a filter net is fixedly connected to the bottom of the vertical net;

[0009] The first sliding blocks are connected in series with each other, and the sliding block close to the support frame is fixedly connected to the first pull rope, the support frame is fixedly connected to the second pull rope, and the fixed block is fixedly connected to the third pull rope.

[0010] The technical principle of the above scheme is as follows: in the process of catching hair shrimp, there are two ways to remove other marine life except hair shrimp from the fishing net; (1) pull the third pull rope, the first pull rope and the second pull rope remain unchanged, and the third pull rope pulls the fixed block. Due to the impact of water, the first partition net, the second partition net and the third partition net will all be subjected to the force into the fishing net body. Therefore, as the fixed block is pulled, the support rod tilts at a small angle, and the fixed block slides along the support rod. The vertical net always remains vertical, but the escape holes on the side walls of the vertical net and the side walls of the fishing net body are relatively close to horizontal, so that other marine life can be removed from the fishing net through the escape holes. The first method is suitable for situations where there are few other marine organisms in the fishing area; (2) the first pull rope is loosened, the second pull rope and the third pull rope remain unchanged, the first sliding block slides down toward the net bag with the impact of water, the support rod tilts at a large angle, the vertical net always remains vertical, but the escape hole on the side wall of the vertical net will be higher than the escape hole on the side wall of the fishing net body, at this time, the escape ability of other marine organisms in the water and the impact force of the water are used to remove other marine organisms in the vertical net and the second and third separation nets from the fishing net; during the above two methods, the vertical net always remains in a vertical working state, so that hair shrimp can be continuously caught.

[0011] The above scheme has the following beneficial effects:

[0012] 1. This solution sets three layers of spacer nets. When the third pull rope is pulled or the first pull rope is loosened, the other two pull ropes are kept unchanged, so that one end of the fishing port of the fishing net can be changed into different shapes, which are used to remove situations where there are fewer other marine organisms and situations where there are more other marine organisms. This is to adapt to different fishing areas. During and after the change of the fishing port of the fishing net, the vertical net is always kept vertical and the filter net is always kept perpendicular to the vertical net. The two work together continuously, which makes up for the problem in the existing technology that it is inconvenient to continuously catch hair shrimps when removing other marine organisms.

[0013] After loosening the first pull rope, the escape opening on the side wall of the vertical net will be higher than the escape opening on the side wall of the fishing net body. At this time, it is not only easier for other marine life to escape, but also for other marine life that are not easy to escape on their own, during the overshoot of catching hair shrimp, due to the use of trawling fishing method, impact force will be continuously generated toward the net bag, which can help other marine life escape from the fishing net.

[0014] 2. In this solution, when the three pull ropes remain unchanged, the multi-layer partition nets are arranged in a funnel shape, which can gather marine life including shrimps within the support frame into the vertical net, and the shrimps enter the net bag through the filter net and remain in the net bag. The remaining marine life can enter the area of ​​the second partition net and the third partition net bracket through the escape hole. However, since the escape hole on the side wall of the fishing net is higher than the escape hole on the side wall of the vertical net, other marine life cannot easily escape from the fishing net due to the continuous impact of seawater, but it will not block the filter net, that is, it will not prevent the shrimps from being caught. Therefore, other marine life can be caught together with the fishing net without affecting the shrimps, making the fishing net more applicable.

[0015] Furthermore, one end of the support rod close to the fixed block is fixedly connected to the limited support rod, and an elastic member is sleeved on the limited support rod, and both ends of the elastic member are fixedly connected to the limiting ring and the second sliding block respectively.

[0016] Beneficial Effects: The elastic member facilitates the reset of the second sliding block after the fishing net is deformed and restored, thereby facilitating the reset of the first, second, and third separation nets. Furthermore, the elastic member continuously shakes the vertical net during the shrimp fishing process, thereby encouraging other marine life residing in the vertical net to quickly escape through the escape port and avoid obstructing the shrimp fishing.

[0017] Furthermore, the first pull rope is fixedly connected to the first sleeve at one end away from the first sliding block, the second pull rope is fixedly connected to the second sleeve at one end away from the support frame, the first sleeve and the second sleeve are slidably matched, the third pull rope passes through the second sleeve and extends outside the second sleeve, and the first sleeve and the second sleeve are both fixedly connected to a traction rope.

[0018] Beneficial effect: The first pull rope is adjusted by pulling the first sleeve to connect the traction rope. Since there are usually several first pull ropes and second pull ropes, they are easy to get tangled and difficult to distinguish if used directly. It is easier to distinguish them by gathering them into one traction rope. When pulling and adjusting, the pulling distance of each first pull rope and the second pull rope can be evenly adjusted.

[0019] Furthermore, a limiting portion is fixedly connected to the bottom of the second sleeve, and a diameter of the limiting portion is larger than a diameter of the first sleeve.

[0020] Beneficial effect: The limiting part can prevent the traction rope on the first sleeve from being loosened too much, and the first sleeve from sliding onto the second and third pull ropes to retract them, causing the opening of the fishing net to be retracted.

[0021] Furthermore, the mesh size of the vertical net is larger than the mesh size of the fishing net body.

[0022] Beneficial effect: the mesh size of the vertical net is larger, which is convenient for other marine organisms to escape, but the mesh size of the fishing net body is smaller, so that hair shrimps cannot escape through the fishing net body.

[0023] Furthermore, the mesh sizes of the first partition net, the second partition net, and the third partition net gradually decrease in sequence, and the mesh size of the third partition net is the same as the mesh size of the filter net.

[0024] Beneficial Effects: The multi-layered screen structure can filter out hair shrimp, while other larger marine organisms are directly removed through the multi-layered screen structure. The third screen is the last layer of the multi-layered screen structure, so its mesh size is the same as the filter screen, allowing only hair shrimp to enter the net bag.

[0025] Furthermore, the number of the first sliding blocks is three, and the first sliding block closest to one end of the net bag is connected in series with a weight block.

[0026] Beneficial effect: the first sliding block of the three fast blocks facilitates supporting the open end of the fishing net, making it more effective in opening; the weight-bearing block can make the open end of the fishing net less likely to get knotted during use and closure.

[0027] Furthermore, a discharge port is provided at the tail of the net bag, which is fixed by a rope so that the discharge port at the tail of the net bag is closed. After fishing, the rope is untied to open the discharge port at the tail of the net bag.

[0028] Beneficial effect: the openable net bag structure makes it easy to take the hair shrimps out of the net bag after catching them.

[0029] Furthermore, the mesh size of the filter is 15-40 mm.

[0030] Beneficial effect: The hair shrimps are caught through a filter net of suitable size for the hair shrimps, thus avoiding the capture of other larger marine organisms.

[0031] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a hair shrimp fishing net for removing other marine organisms according to the present invention;

[0033] Figure 2 A partial structural diagram of an embodiment of a hair shrimp fishing net for removing other marine organisms according to the present invention;

[0034] Figure 3 This is a schematic structural diagram of an embodiment of a hair shrimp fishing net for removing other marine organisms according to the present invention after being loosened and stretched for the first time. DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0037] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0038] The following is further described in detail through specific implementation methods:

[0039] The figure marks in the drawings of the specification include: fishing net body 1, net bag 2, discharge port 3, first sliding block 4, first pull rope 5, second pull rope 6, third pull rope 7, limiting part 8, second sleeve 9, first sleeve 10, traction rope 11, filter net 12, third partition net 13, escape port 14, support cover 15, weight block 16, first partition net 17, second partition net 18, vertical net 19, support rod 20, second sliding block 21, fixed block 22, limiting ring 23, spring 24.

[0040] Example 1: As shown in the attached Figure 1-3 As shown: A shrimp fishing net for removing other marine organisms, including a fishing net body 1, with a support frame and a net bag 2 provided at both ends of the fishing net body 1, the net bag 2 is fixedly connected to the fishing net body 1, and the opening diameter of the net bag 2 close to the end of the fishing net body 1 is smaller than the diameter of the fishing net body 1, so that an hourglass structure is formed between the net bag 2 and the fishing net body 1, and the support cover 15 is also fixedly connected to the fishing net body 1, and the support cover 15 supports the fishing net body 1 to form an open structure.

[0041] The support frame is fixedly connected to the first partition net 17, and the side wall of the fishing net is slidably connected to at least two first sliding blocks 4. The two first sliding blocks 4 are respectively fixed with the second partition net 18 and the third partition net 13. The first partition net 17, the second partition net 18 and the third partition net 13 are all open at both ends. Figure 1 As shown, from left to right are the first partition net 17, the second partition net 18 and the third partition net 13, and the inner wall of the second partition net 18 is slidably connected to a switching component.

[0042] The switching assembly includes a support rod 20 and a fixed block 22 slidably connected to the inner wall of the second partition net 18. The number of the support rods 20 is four, which are evenly distributed around the circumference and slidably connected to the second partition net 18. The support rod 20 is hinged to the fixed block 22 at one end away from the second partition net 18. A second sliding block 21 is slidably connected to the support rod 20. The first partition net 17 is fixedly connected to the second sliding block 21 at one end away from the support frame. The fixed block 22 is fixedly connected to the vertical net 19. The second partition net 18 and the third partition net 13 are both fixedly connected to the side wall of the vertical net 19. The diameter of the vertical net 19 is smaller than the diameter of the third partition net 13, the first partition net 17 and the second partition net 18, and in the initial state, the third partition net 13 and the second partition net 1 8 is connected to the first sliding block 4 at a higher height than the vertical net 19, and the first partition net 17 is connected to the support cover 15 at a higher height than the second sliding block 21. Therefore, the third partition net 13, the first partition net 17 and the second partition net 18 all form a conical structure. The side walls of the vertical net 19 and the side walls of the fishing net body 1 are both provided with escape openings 14. The two escape openings 14 have the same diameter and are both located between the second partition net 18 and the third partition net 13. That is, an escape channel for other marine organisms is formed between the third partition net 13 and the second partition net 18. The diameter of the filter net 12 fixedly connected to the bottom of the vertical net 19 is the same as that of the vertical net 19.

[0043] The first sliding blocks 4 are connected in series via ropes, and the sliding block close to the support frame is fixedly connected to the first pull rope 5 , the support frame is fixedly connected to the second pull rope 6 , and the fixed block 22 is fixedly connected to the third pull rope 7 .

[0044] The specific implementation process is as follows: For areas with fewer other marine organisms, the method of use is as follows: pull the third pull rope 7, the first pull rope 5 and the second pull rope 6 remain unchanged, the fixed block 22 will be pulled by the third pull rope 7, and the fixed block 22 will drive the vertical net 19 to rise toward the support cover 15, and the inclination angle of the conical structure of the first partition net 17 will increase, gradually approaching to the level of the support cover 15, and the vertical net 19 drives the escape port 14 opened on its side wall to rise toward the support cover 15, thereby gradually becoming level with the escape port 14 opened on the side wall of the fishing net body 1, and removing other marine organisms between the third partition net 13 and the second partition net 18 from the fishing net body 1.

[0045] For other areas with more marine life, the method of use is as follows: Figure 3As shown, the first pull rope 5 is loosened, the second pull rope 6 and the third pull rope 7 remain unchanged, the first sliding block 4 is lowered and slid toward the net bag 2 with the impact of water, the support rod 20 is tilted at a large angle, and the vertical net 19 always remains vertical, but the escape hole 14 on the side wall of the vertical net 19 will be higher than the escape hole 14 on the side wall of the fishing net body 1, forming an inclination in the direction of the impact force of seawater. On the one hand, other marine organisms can escape easily, and on the other hand, the impact force of seawater is used to impact other marine organisms between the first separation net 17 and the second separation net 18 to promote their removal from the fishing net body 1.

[0046] For hair shrimp fishing: In the two different change scenarios mentioned above, the vertical net 19 always remains perpendicular to the filter net 12. In the first change scenario, although the opening end of the fishing net body 1 will become smaller due to the action of the first partition net 17, the vertical net 19 can continue to catch hair shrimp. In the second change scenario, the opening end of the fishing net body 1 will become larger, allowing more hair shrimp to enter through the first partition net 17 and be caught by the vertical net 19 and the filter net 12. The caught hair shrimp will eventually pass through the filter net 12 and enter the net bag 2 for temporary storage.

[0047] Example 2: As shown in the attached Figure 2 As shown: Compared with embodiment 1, the difference is that one end of the support rod 20 close to the fixed block 22 is fixedly connected to the limiting support rod 20 and an elastic member is sleeved on the limiting support rod 20. In this embodiment, the elastic member is a spring 24, and both ends of the spring 24 are fixedly connected to the limiting ring 23 and the second sliding block 21 respectively.

[0048] The specific implementation process is as follows: after the open end of the fishing net body 1 is deformed in the two ways of the first embodiment, when it needs to be restored, the spring 24 will assist the second sliding block 21 to reset, and the second sliding block 21 will drive the first partition net 17 to reset. At the same time, the first partition net 17 and the second partition net 18 connected to the vertical net 19 can also receive the elastic force of the spring 24 to quickly reset; during the process of catching hair shrimp, the spring 24 gives the vertical net 19 a certain floating space, so that it is out of the floating state for a long time, which can prompt other marine life that enters the vertical net 19 to escape as soon as possible.

[0049] Example 3: As shown in the attached Figure 1 and attached Figure 3As shown: Compared with the second embodiment, the difference is that the number of first pull ropes 5 is multiple, for example, four, and the multiple first pull ropes 5 are evenly distributed around the circumference and fixed to the first sliding block 4. The first pull ropes 5 are fixedly connected to the first sleeve 10 at one end away from the first sliding block 4. The number of second pull ropes 6 is also multiple, for example, four, and the multiple second pull ropes 6 are evenly distributed around the circumference and fixed to the support cover 15. The second pull ropes 6 are fixedly connected to the second sleeve 9 at one end away from the support frame. The first sleeve 10 and the second sleeve 9 are slidably engaged. The third pull rope 7 passes through the second sleeve 9 and extends outside the second sleeve 9. The first sleeve 10 and the second sleeve 9 are both fixedly connected to a traction rope 11.

[0050] The specific implementation process is as follows: instead of pulling several first pull ropes 5 and second pull ropes 6, pulling the traction ropes 11 on the second sleeve 9 and the first sleeve 10 respectively can adjust several first pull ropes 5 or second pull ropes 6 at the same time, and the adjusted lengths are more uniform.

[0051] Example 4: As shown in the attached Figure 1 and attached Figure 3 As shown: Compared with the third embodiment, the difference is that the bottom of the second sleeve 9 is fixedly connected to the limiting portion 8, the limiting portion 8 is a cylindrical structure, and the diameter of the limiting portion 8 is larger than the diameter of the first sleeve 10.

[0052] The specific implementation process is as follows: the limiting portion 8 limits the position of the first sleeve 10 during its sliding along the second sleeve 9, so that it cannot slide onto the first and second pull ropes 5 and 6, thereby avoiding the first and second pull ropes 5 and 6 from being retracted.

[0053] Example 5: Compared with Example 4, the difference is that the mesh size of the vertical net 19 is larger than the mesh size of the fishing net body 1.

[0054] The specific implementation process is as follows: some other marine organisms of smaller size can escape directly through the mesh of the vertical net 19, but some hair shrimps are smaller in size and can also easily escape through the mesh of the vertical net 19. Therefore, the mesh diameter of the fishing net body 1 is set to be smaller, so that the hair shrimps cannot escape through the mesh of the fishing net body 1. After other smaller marine organisms enter the escape channel between the second partition net 18 and the third partition net 13, they are given sufficient time to escape from the fishing net body 1 through the escape opening 14.

[0055] Example 6: Compared with Example 5, the difference is that the mesh sizes of the first partition net 17 , the second partition net 18 , and the third partition net 13 gradually decrease in sequence, and the mesh size of the third partition net 13 is the same as the mesh size of the filter net 12 .

[0056] The specific implementation process is as follows: other smaller marine organisms and hair shrimps can enter the space above the third screen 13 through the first screen 17 and the second screen 18, but other smaller marine organisms cannot pass through the third screen 13 together with the hair shrimps, thereby increasing the fishing area for the hair shrimps.

[0057] Example 7: As shown in the attached Figure 1 and attached Figure 3 As shown: Compared with Example 6, the difference is that the number of the first sliding blocks 4 is three, and the three sliding blocks are evenly slidably connected to the side wall of the fishing net body 1. The first sliding block 4 closest to one end of the net bag 2 (the rightmost end) is connected in series with a weight block 16.

[0058] The specific implementation process is as follows: the three first sliding blocks 4 support the open end of the fishing net to make it more open; the weight block 16 can make the open end of the fishing net less likely to get knotted during the use and collection of the fishing net.

[0059] Example 8: As shown in the attached Figure 1 and attached Figure 3 As shown: Compared with Example 7, the difference is that a discharge port 3 is opened at the tail of the net bag 2, and the discharge port 3 is fixed by a rope to close the discharge port 3 at the tail of the net bag 2. After fishing, the rope is untied to open the discharge port 3 at the tail of the net bag 2.

[0060] Example 9: Compared with Example 8, the difference is that the mesh size of the filter 12 is 15-40 mm, and in this embodiment it is preferably 20 mm. The filter 12 with a suitable mesh size is selected according to the different sizes of shrimps to be caught.

[0061] The above is only an embodiment of the present invention, and common knowledge such as the specific structure and / or characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A shrimp fishing net for removing other marine organisms, characterized by: The fishing net comprises a main body, a support frame and a net bag are respectively provided at both ends of the fishing net main body, the support frame is fixedly connected to a first partition net, at least two first sliding blocks are slidably connected to the side wall of the fishing net, the first sliding blocks are respectively fixed to a second partition net and a third partition net, the first partition net, the second partition net and the third partition net are all open at both ends, the second partition net is located between the first partition net and the third partition net, and the inner side wall of the second partition net is slidably connected to a switching component; The switching assembly includes a support rod and a fixed block slidably connected to the inner side wall of the second partition net, the support rod is hinged to the fixed block at one end away from the second partition net, the second sliding block is slidably connected to the support rod, the first partition net is fixedly connected to the second sliding block at one end away from the support frame, the fixed block is fixedly connected to the vertical net, the second partition net and the third partition net are both fixedly connected to the side wall of the vertical net, the side wall of the vertical net and the side wall of the fishing net body are both provided with escape openings, the escape openings are all located between the second partition net and the third partition net, and a filter net is fixedly connected to the bottom of the vertical net; The first sliding blocks are connected in series with each other, and the sliding block close to the support frame is fixedly connected to the first pull rope, the support frame is fixedly connected to the second pull rope, and the fixed block is fixedly connected to the third pull rope; One end of the support rod close to the fixed block is fixedly connected to the limited support rod. An elastic member is sleeved on the support rod, and both ends of the elastic member are fixedly connected to the limiting ring and the second sliding block respectively; The first pull rope is fixedly connected to the first sleeve at one end away from the first sliding block, the second pull rope is fixedly connected to the second sleeve at one end away from the support frame, the first sleeve and the second sleeve are slidably matched, the third pull rope passes through the second sleeve and extends to the outside of the second sleeve, and the first sleeve and the second sleeve are both fixedly connected to a traction rope.

2. The shrimp fishing net for removing other marine organisms according to claim 1, characterized in that: The bottom of the second sleeve is fixedly connected to the limiting portion, and the diameter of the limiting portion is larger than the diameter of the first sleeve.

3. The shrimp fishing net for removing other marine organisms according to claim 2, characterized in that: The mesh size of the vertical net is larger than the mesh size of the fishing net body.

4. The shrimp fishing net for removing other marine organisms according to claim 3, characterized in that: The mesh sizes of the first partition net, the second partition net and the third partition net decrease gradually in sequence, and the mesh size of the third partition net is the same as the mesh size of the filter net.

5. The shrimp fishing net for removing other marine organisms according to claim 4, characterized in that: The number of the first sliding blocks is three, and the first sliding block closest to one end of the net bag is connected in series with a weight block.

6. The shrimp fishing net for removing other marine organisms according to claim 5, characterized in that: A discharge port is provided at the tail of the net bag, which is fixed by a rope so that the discharge port at the tail of the net bag is closed. After fishing, the rope is untied to open the discharge port at the tail of the net bag.

7. The shrimp fishing net for removing other marine organisms according to claim 6, characterized in that: The mesh size of the filter is 15-40mm.

Images